CSV Viewer — View CSV Files as a Table Online
View CSV files as an interactive HTML table online. Upload a file or paste CSV text. Free, browser-based.
Visualising CSV data as a table makes it much easier to understand the structure, spot errors, and verify row and column counts. This tool renders your CSV data as a formatted HTML table in the browser, with the header row highlighted and row counts displayed. You can paste CSV text directly or upload a .csv file. The rendering is instant and handles large files well. No data is ever uploaded to a server.
How to use
- Paste CSV text into the input area, or click 'Upload CSV' to open a .csv file.
- The CSV is rendered as a formatted table instantly.
- Scroll horizontally for wide tables. Row and column counts are shown above the table.
FAQ
What delimiters are supported?
PapaParse automatically detects the delimiter. Comma, tab (TSV), semicolon, and pipe delimiters are all handled automatically. You do not need to specify the delimiter — the library analyses the input and selects the most likely delimiter based on the file content.
Is the first row treated as a header?
Yes. The first row of the CSV is used as the table header row, displayed with a distinct background style. If your CSV has no header row, the first data row will appear as the header, which may not be what you want. If that happens, manually add a header row to your CSV before pasting.
How large a CSV file can I view?
The tool can handle large CSV files, but rendering a very large table in the browser DOM can be slow. Files with up to a few thousand rows render near-instantly. Files with tens of thousands of rows may take a moment and produce a large HTML table that requires scrolling. For very large files, consider using a desktop tool like LibreOffice Calc.
Can I sort or filter the table?
This is a read-only viewer — it does not support interactive sorting, filtering, or column resizing. For interactive spreadsheet-style features in the browser, use Google Sheets or import the CSV into LibreOffice Calc. This tool is designed for quickly visualising the structure and content of a CSV file.
How are special characters displayed?
CSV values are HTML-escaped before being displayed in the table, so characters like <, >, and & are displayed correctly rather than being interpreted as HTML. Newlines within quoted CSV fields are preserved in the table cell.
Is my data sent to a server?
No. The CSV is parsed and rendered entirely in your browser using PapaParse and React. No data is uploaded to any server. This makes the tool safe for viewing CSV files containing personal data, financial records, or other sensitive information.